Process for the production of material of metals and alloys having microstructure or fine nonmetallic inclusions and having less segregation of alloying elements

摘要

A process for the production of a homogenized material of metals and alloys from a slab, and the material has a fine microstructure or fine nonmetallic inclusions and has less segregation of alloying elements. The process comprises the following steps (a), (b) and (c), and the steps (b) and (c) are preferably repeated; the process ;(a) processing a continuously cast slab or a slab conventionally cast and then forged to have a form suitable for hot rolling, into sheet(s) or coiled strip by either hot rolling or both of hot rolling and cold rolling, the sheet(s) or the coiled strip having a thickness ¼ or smaller based on the thickness which the slab has before processed, ;(b) cutting the sheet(s) or the coiled strip to prepare sheets having a predetermined length, cleaning surfaces of the sheets, stacking the sheets and integrating the sheets by circumferential welding, and ;(c) processing the welding-integrated sheets into a sheet or a coiled strip by either hot rolling or both of hot rolling and cold rolling.